Matches in SemOpenAlex for { <https://semopenalex.org/work/W2958519786> ?p ?o ?g. }
- W2958519786 endingPage "2962" @default.
- W2958519786 startingPage "2941" @default.
- W2958519786 abstract "Abstract A methodology is presented for objectively optimizing nonorographic gravity wave source parameters to minimize forecast error for target regions and forecast lead times. In this study, we employ a high-altitude version of the Navy Global Environmental Model (NAVGEM-HA) to ascertain the forcing needed to minimize hindcast errors in the equatorial lower stratospheric zonal-mean zonal winds in order to improve forecasts of the quasi-biennial oscillation (QBO) over seasonal time scales. Because subgrid-scale wave effects play a large role in driving the QBO, this method leverages the nonorographic gravity wave drag (GWD) parameterization scheme to provide the necessary forcing. To better constrain the GWD source parameters, we utilize ensembles of NAVGEM-HA hindcasts over the 2014–16 period with perturbed source parameters and develop a cost function to minimize errors in the equatorial lower stratosphere compared to analysis. Thus, we may determine the set of GWD source parameters that yields a forecast state that most closely agrees with observed QBO winds over each optimization time interval. Results show that the source momentum flux and phase speed spectrum width are the most important parameters. The seasonal evolution of optimal parameter value, specifically a robust semiannual periodicity in the source strength, is also revealed. Changes in optimal source parameters with increasing forecast lead time are seen, as the GWD parameterization takes on a more active role as QBO driver at longer forecast lengths. Implementation of a semiannually varying source function at the equator provides RMS error improvement in QBO winds over the default constant value." @default.
- W2958519786 created "2019-07-23" @default.
- W2958519786 creator A5033439121 @default.
- W2958519786 creator A5039423396 @default.
- W2958519786 creator A5042917951 @default.
- W2958519786 creator A5053108676 @default.
- W2958519786 date "2019-09-01" @default.
- W2958519786 modified "2023-10-17" @default.
- W2958519786 title "Optimization of Gravity Wave Source Parameters for Improved Seasonal Prediction of the Quasi-Biennial Oscillation" @default.
- W2958519786 cites W1489539130 @default.
- W2958519786 cites W1513283046 @default.
- W2958519786 cites W1546766627 @default.
- W2958519786 cites W1869310568 @default.
- W2958519786 cites W1905581252 @default.
- W2958519786 cites W1969072534 @default.
- W2958519786 cites W1976399136 @default.
- W2958519786 cites W1979601660 @default.
- W2958519786 cites W1980999314 @default.
- W2958519786 cites W1986497447 @default.
- W2958519786 cites W1992693484 @default.
- W2958519786 cites W1996730960 @default.
- W2958519786 cites W2000503913 @default.
- W2958519786 cites W2001236855 @default.
- W2958519786 cites W2001457211 @default.
- W2958519786 cites W2002596803 @default.
- W2958519786 cites W2002641991 @default.
- W2958519786 cites W2010724573 @default.
- W2958519786 cites W2014885181 @default.
- W2958519786 cites W2024018771 @default.
- W2958519786 cites W2025415734 @default.
- W2958519786 cites W2026477450 @default.
- W2958519786 cites W2033254155 @default.
- W2958519786 cites W2033894500 @default.
- W2958519786 cites W2034393418 @default.
- W2958519786 cites W2036824132 @default.
- W2958519786 cites W2041081648 @default.
- W2958519786 cites W2044968297 @default.
- W2958519786 cites W2045316829 @default.
- W2958519786 cites W2049089050 @default.
- W2958519786 cites W2050299646 @default.
- W2958519786 cites W2055743208 @default.
- W2958519786 cites W2059853230 @default.
- W2958519786 cites W2064333355 @default.
- W2958519786 cites W2067844711 @default.
- W2958519786 cites W2068085313 @default.
- W2958519786 cites W2070309159 @default.
- W2958519786 cites W2107277409 @default.
- W2958519786 cites W2108915302 @default.
- W2958519786 cites W2114620230 @default.
- W2958519786 cites W2117343084 @default.
- W2958519786 cites W2120978061 @default.
- W2958519786 cites W2138219202 @default.
- W2958519786 cites W2139011662 @default.
- W2958519786 cites W2141319951 @default.
- W2958519786 cites W2143148027 @default.
- W2958519786 cites W2143847535 @default.
- W2958519786 cites W2154345211 @default.
- W2958519786 cites W2158140310 @default.
- W2958519786 cites W2158993832 @default.
- W2958519786 cites W2160054238 @default.
- W2958519786 cites W2165953737 @default.
- W2958519786 cites W2166557310 @default.
- W2958519786 cites W2166819726 @default.
- W2958519786 cites W2168832918 @default.
- W2958519786 cites W2178713137 @default.
- W2958519786 cites W2179984466 @default.
- W2958519786 cites W2222153457 @default.
- W2958519786 cites W2325913447 @default.
- W2958519786 cites W2467446649 @default.
- W2958519786 cites W2490768310 @default.
- W2958519786 cites W2506923022 @default.
- W2958519786 cites W2511003889 @default.
- W2958519786 cites W2522825471 @default.
- W2958519786 cites W2531966698 @default.
- W2958519786 cites W2562606107 @default.
- W2958519786 cites W2575106313 @default.
- W2958519786 cites W2605384208 @default.
- W2958519786 cites W2736991911 @default.
- W2958519786 cites W2766404992 @default.
- W2958519786 cites W2766653104 @default.
- W2958519786 cites W2798232760 @default.
- W2958519786 cites W2804454471 @default.
- W2958519786 cites W2883128331 @default.
- W2958519786 cites W2886418361 @default.
- W2958519786 cites W2888035054 @default.
- W2958519786 cites W2914711474 @default.
- W2958519786 doi "https://doi.org/10.1175/jas-d-19-0077.1" @default.
- W2958519786 hasPublicationYear "2019" @default.
- W2958519786 type Work @default.
- W2958519786 sameAs 2958519786 @default.
- W2958519786 citedByCount "3" @default.
- W2958519786 countsByYear W29585197862020 @default.
- W2958519786 countsByYear W29585197862022 @default.
- W2958519786 crossrefType "journal-article" @default.
- W2958519786 hasAuthorship W2958519786A5033439121 @default.
- W2958519786 hasAuthorship W2958519786A5039423396 @default.
- W2958519786 hasAuthorship W2958519786A5042917951 @default.
- W2958519786 hasAuthorship W2958519786A5053108676 @default.